<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>Layout</title>
  <style media="screen">
    html * {
      padding: 0;
      margin: 0;
    }
  </style>
</head>

<body>
  <style>
    .container {
      padding-left: 220px;
      padding-right: 220px;
    }
    .center {
      float: left;
      width: 100%;
      height: 500px;
      background: yellow;
    } 
    .left,.right {
      float: left;
      width: 200px;
      height: 400px;
    } 
    .left {  
      background: red;
      margin-left: -100%;
      position: relative;
      left: -220px;
    }
    .right {
      background: blue;
      margin-left: -200px;
      position: relative;
      right: -220px;
    }
  </style>
  <article class="container">
    <div class="center">
      <h2>圣杯布局</h2>
    </div>
    <div class="left"></div>
    <div class="right"></div>
  </article>
</body>

</html>